Laboratory tray



FIG. 1 is a plan view of a laboratory tray showing my design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a front top persepctive view thereof, the reverse side being a mirror image thereof;

FIG. 4 is a left end view thereof; and,

FIG. 5 is a right end view thereof. 

The ornamental design for a laboratory tray, as shown and described. 